CN111151086A - Three-phase separation device for water quenching product and water quenching flue gas treatment system and method - Google Patents
Three-phase separation device for water quenching product and water quenching flue gas treatment system and method Download PDFInfo
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- CN111151086A CN111151086A CN202010069351.3A CN202010069351A CN111151086A CN 111151086 A CN111151086 A CN 111151086A CN 202010069351 A CN202010069351 A CN 202010069351A CN 111151086 A CN111151086 A CN 111151086A
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- water quenching
- flue gas
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- water
- slag
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 238000010791 quenching Methods 0.000 title claims abstract description 145
- 230000000171 quenching effect Effects 0.000 title claims abstract description 143
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000003546 flue gas Substances 0.000 title claims abstract description 73
- 238000005191 phase separation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000002893 slag Substances 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims abstract description 7
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 238000002386 leaching Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 14
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a three-phase separation device for a water quenching product, a water quenching flue gas treatment system and a water quenching flue gas treatment method. The three-phase separation device for the water quenching product comprises a reaction tank, wherein a partition wall extending into the lower part of a liquid level is arranged in the reaction tank, the reaction tank is divided into a water quenching tank and a slag settling tank which are connected through a flow channel below the partition wall, the water quenching product is converted into water quenching smoke and water quenching slag after entering the water quenching tank, the water quenching slag flows into the slag settling tank through the flow channel, and a gas collecting hood for collecting the water quenching smoke is arranged above the water quenching tank. The upper parts of the water quenching tank and the slag settling tank are separated, so that water quenching flue gas generated by the water quenching tank can be collected by the gas collecting hood more intensively. The water quenching tank is communicated with the lower part of the slag settling tank, so that the temperature of the water quenching slag is fully reduced in the process that the water quenching slag flows to the slag settling tank, and the liquid in the slag settling tank and the liquid in the water quenching tank can be subjected to heat transfer, so that the temperature of the liquid in the water quenching tank is reduced, and the water quenching efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water quenching, in particular to a three-phase separation device for a water quenching product, a water quenching flue gas treatment system and a water quenching flue gas treatment method.
Background
The liquid high-temperature slag can be quenched and cracked into small-particle water-quenched slag by taking water as a quenching agent, and the water-quenched slag can be directly used as a building material without being crushed. However, a large amount of water quenching flue gas with high temperature and high pressure characteristics is generated in the water quenching process, on one hand, if the water quenching flue gas is not properly treated in time, explosion hidden dangers can be generated, and on the other hand, the environment-friendly problem generated by the collected water quenching flue gas does not have an efficient and energy-saving treatment technology.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a safe and efficient three-phase separation device for water quenching products.
The second technical problem to be solved by the invention is to provide a high-efficiency, energy-saving and environment-friendly water quenching flue gas treatment system and method.
In order to achieve the above object, the present invention firstly provides a three-phase separation apparatus for water-quenched products. The three-phase separation device for the water quenching product comprises a reaction tank, wherein a partition wall extending into the lower part of a liquid level is arranged in the reaction tank, the reaction tank is divided into a water quenching tank and a slag settling tank which are connected through a flow channel below the partition wall, the water quenching product is converted into water quenching smoke and water quenching slag after entering the water quenching tank, the water quenching slag flows into the slag settling tank through the flow channel, and a gas collecting hood for collecting the water quenching smoke is arranged above the water quenching tank.
Firstly, the three-phase separation device separates the upper parts of the water quenching tank and the slag settling tank, so that water quenching flue gas generated by the water quenching tank can be collected by the gas collecting hood more intensively. Secondly, the water quenching tank is communicated with the lower part of the slag settling tank, so that the temperature of the water quenching slag can be fully reduced in the process of flowing to the slag settling tank, and the liquid in the slag settling tank and the liquid in the water quenching tank can transfer heat to reduce the temperature of the liquid in the water quenching tank and improve the water quenching efficiency; the upper part of the slag settling tank is opened, so that the heat dissipation of liquid in the slag settling tank is facilitated. Meanwhile, the reaction tank structure with the upper partition part and the lower communicated part can enable the liquid level of the slag settling tank to play a liquid sealing role, and effectively prevents potential safety hazards caused by overflow of water quenching flue gas generated by the water quenching tank from flowing into the slag settling tank. Therefore, the three-phase separation device has a simple structure, can safely and efficiently realize the separation of three phases in the water quenching product, and has strong practicability.
Furthermore, at least the bottom of the water quenching tank in the water quenching tank and the slag settling tank is an inclined plane, and the bottom of the water quenching tank is higher than the bottom of the slag settling tank. Therefore, the flow of the water quenching slag is convenient.
Further, the gas supplementing mechanism is used for supplementing gas to the water quenching tank when the yield of the water quenching flue gas is lower than a preset value. When the water quenching smoke generated by the water quenching pool is less, negative pressure can be formed in the gas collecting hood, so that potential safety hazards are generated; therefore, the air supplementing mechanism is arranged to supplement air into the water quenching tank, so that the stability of air pressure in the air collecting hood can be maintained, and the safe operation is ensured. The air supply mechanism can supply air to the water quenching tank.
Furthermore, the air supply mechanism comprises an air vent communicated with the water quenching tank and the outside of the water quenching tank and a one-way breather valve arranged on the air vent. Therefore, when negative pressure is formed in the gas-collecting hood, the one-way breather valve is sucked up, and the gas outside the water quenching tank is sucked into the water quenching tank through the vent hole; when the air pressure in the air collecting hood is in a normal range, the one-way breather valve falls to the blocking vent hole due to the self gravity, and the sealing performance is ensured.
In order to achieve the purpose, the invention secondly provides a water quenching flue gas treatment system and a water quenching flue gas treatment method. Wherein, water quenching flue gas processing system includes:
the water quenching flue gas collecting unit comprises the three-phase separating device for water quenching products;
the circulating spraying unit sprays the water quenching flue gas collected by the water quenching flue gas collecting unit by adopting cooled circulating liquid and cools the sprayed circulating liquid;
and the white eliminating unit is used for mixing the high-temperature flue gas and the sprayed water quenching flue gas and then discharging the mixture.
The water quenching flue gas can be cooled and dedusted by spraying through the circulating spraying unit; the water quenching flue gas is heated by the high-temperature flue gas and then discharged, so that the white elimination of the flue gas can be realized. Therefore, the water quenching flue gas treatment system has the advantages of simple structure, high efficiency, energy conservation and environmental protection.
The circulating spray unit comprises a leaching tower and a power device for enabling circulating liquid to flow, a cooling device is arranged in the leaching tower, the power device inputs liquid in the dreg settling tank into the leaching tower as the circulating liquid or part of the circulating liquid, and the sprayed circulating liquid flows into the dreg settling tank after being cooled by the cooling device. Therefore, the liquid in the sediment tank is used as the circulating liquid or part of the circulating liquid, so that the water resource can be utilized to the maximum extent.
Furthermore, a demister is arranged in the leaching tower, and the sprayed water quenching flue gas enters the white eliminating unit after being treated by the demister. Therefore, the demister can remove moisture carried by water quenching flue gas, and the whitening effect is improved.
Furthermore, the white eliminating unit comprises a combustion chamber and a mixing chamber, and the tail gas of the submerged arc furnace is combusted in the combustion chamber to generate high-temperature flue gas and then enters the mixing chamber to be mixed with water quenching flue gas. The submerged arc furnace tail gas is preferably the tail gas of a yellow phosphorus electric furnace, and part of the tail gas is required to be directly discharged after being combusted in the safety of the yellow phosphorus electric furnace, so that the heat of high-temperature flue gas generated by the combustion of the tail gas of the yellow phosphorus electric furnace can be reasonably utilized.
Further, the circulating spraying device further comprises a water supplementing unit, and the water supplementing unit inputs liquid serving as circulating liquid or part of circulating liquid into the circulating spraying unit. Because a small amount of liquid in the water quenching pool can be taken away by the water quenching flue gas, the water quenching effect and the spraying effect can be maintained through the water supplementing unit. A liquid level detection mechanism can be arranged in the slag settling tank or the water quenching tank, and when the liquid level is lower than a preset value, the water replenishing unit can automatically replenish water.
The water quenching flue gas treatment method comprises the step of adopting the water quenching flue gas treatment system. The water quenching flue gas treatment method has the advantages of simple process, high efficiency, energy conservation and environmental protection.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the invention and their equivalents and not limit it unduly. In the drawings:
fig. 1 is a schematic structural diagram of a three-phase separation device for water-quenched products and a water-quenched flue gas treatment system in example 1 of the present invention.
Fig. 2 is a schematic structural diagram of a three-phase separation device for water-quenched products and a water-quenched flue gas treatment system in example 2 of the present invention.
The relevant references in the above figures are:
100: a reaction tank;
110: a water quenching pool;
120: a slag settling tank;
130: a gas-collecting hood;
140: a vent hole;
150: a one-way breather valve;
160: a partition wall;
200: a power plant;
300: leaching the tower;
310: a cooling device;
320: a demister;
410: a combustion chamber;
420: a mixing chamber;
500: a fan;
600: and a water replenishing unit.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
With respect to terms and units in the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
Example 1
The three-phase separation device for water quenching products and the water quenching flue gas treatment system of the embodiment are shown in fig. 1.
As shown in fig. 1, the three-phase separation apparatus for water-quenched products includes a reaction tank 100, a partition wall 160 extending below a liquid level is disposed in the reaction tank 100, the partition wall 160 divides the reaction tank 100 into a water-quenching tank 110 and a slag settling tank 120 connected through a flow channel below the partition wall 160, water-quenched materials are converted into water-quenched flue gas and water-quenched slag after entering the water-quenching tank 110, the water-quenched slag flows into the slag settling tank 120 through the flow channel, and a gas collecting hood 130 for collecting the water-quenched flue gas is disposed above the water-quenching tank 110.
The bottoms of the water quenching tank 110 and the slag settling tank 120 are both inclined planes, and the bottom of the water quenching tank 110 is higher than the bottom of the slag settling tank 120.
As shown in fig. 1, the water quenching flue gas treatment system includes:
the water quenching flue gas collecting unit adopts the three-phase separating device for water quenching products;
the circulating spraying unit sprays the water quenching flue gas collected by the water quenching flue gas collecting unit by adopting cooled circulating liquid and cools the sprayed circulating liquid; the circulating spray unit comprises a leaching tower 300 and a power device 200 enabling circulating liquid to flow, a cooling device 310 and a demister 320 are arranged in the leaching tower 300, water quenching flue gas collected by the water quenching flue gas collecting unit is input into the leaching tower 300 through a fan 500, the power device 200 inputs liquid in the slag settling tank 120 into the leaching tower 300 as the circulating liquid or part of the circulating liquid to spray the water quenching flue gas, and the sprayed circulating liquid is cooled by the cooling device 310 and then flows into the slag settling tank 120;
the white elimination unit is used for mixing the high-temperature flue gas and the sprayed water quenching flue gas and then discharging the mixture; the white unit that disappears includes combustion chamber 410 and mixing chamber 420, and the water quenching flue gas after spraying is through the demister 320 handles the back entering mixing chamber 420, and the hot stove tail gas gets into mixing chamber 420 and mixes after burning in combustion chamber 410 and generating high temperature flue gas.
And the water supplementing unit 600 is used for inputting liquid serving as circulating liquid or part of circulating liquid into the circulating spraying unit by the water supplementing unit 600.
Example 2
Compared with the embodiment 1, the three-phase separation device for water quenching products and the water quenching flue gas treatment system of the embodiment have the following differences: as shown in fig. 2, the system further comprises a gas supplementing mechanism for supplementing gas to the water quenching tank 110 when the yield of the water quenching flue gas is lower than a preset value; the air supply mechanism comprises an air vent 140 communicating the water quenching tank 110 and the outside of the water quenching tank 110, and a one-way breather valve 150 arranged on the air vent 140.
The method of the water quenching flue gas treatment system in the embodiment 1 or the embodiment 2 can be used for treating the water quenching flue gas in an efficient, energy-saving and environment-friendly manner, and the treated water quenching flue gas can be directly discharged.
The contents of the present invention have been explained above. Those skilled in the art will be able to implement the invention based on these teachings. All other embodiments, which can be derived by a person skilled in the art from the above description without inventive step, shall fall within the scope of protection of the present invention.
Claims (10)
1. A three-phase separator for water quenching product, including reaction tank (100), its characterized in that: the reaction tank (100) is internally provided with a partition wall (160) extending into the lower part of the liquid level, the partition wall (160) divides the reaction tank (100) into a water quenching tank (110) and a slag settling tank (120) which are connected through a flow channel below the partition wall (160), water quenching substances are converted into water quenching smoke and water quenching slag after entering the water quenching tank (110), the water quenching slag flows into the slag settling tank (120) through the flow channel, and a gas collecting hood (130) for collecting the water quenching smoke is arranged above the water quenching tank (110).
2. The three-phase separation apparatus for water quenched products according to claim 1, wherein: at least the bottom of the water quenching pool (110) in the water quenching pool (110) and the slag settling pool (120) is an inclined plane, and the bottom of the water quenching pool (110) is higher than the bottom of the slag settling pool (120).
3. The three-phase separation apparatus for water quenched products according to claim 1, wherein: and the gas supplementing mechanism is used for supplementing gas to the water quenching tank (110) when the yield of the water quenching flue gas is lower than a preset value.
4. The three-phase separation apparatus for water quenched products according to claim 3, wherein: the air supply mechanism comprises a vent hole (140) communicated with the water quenching pool (110) and the outside of the water quenching pool (110) and a one-way breather valve (150) arranged on the vent hole (140).
5. Water quenching flue gas processing system, its characterized in that: the method comprises the following steps:
a water quenched flue gas collection unit comprising the three-phase separation device for water quenched product of any one of claims 1 to 4;
the circulating spraying unit sprays the water quenching flue gas collected by the water quenching flue gas collecting unit by adopting cooled circulating liquid and cools the sprayed circulating liquid;
and the white eliminating unit is used for mixing the high-temperature flue gas and the sprayed water quenching flue gas and then discharging the mixture.
6. The water quenching flue gas treatment system of claim 5, wherein: the circulating spray unit comprises a leaching tower (300) and a power device (200) enabling circulating liquid to flow, a cooling device (310) is arranged in the leaching tower (300), the power device (200) inputs liquid in the slag settling tank (120) into the leaching tower (300) as circulating liquid or partial circulating liquid, and the sprayed circulating liquid flows into the slag settling tank (120) after being cooled by the cooling device (310).
7. The water quenching flue gas treatment system of claim 6, wherein: a demister (320) is further arranged in the leaching tower (300), and the sprayed water quenching flue gas enters the white eliminating unit after being treated by the demister (320).
8. The water quenching flue gas treatment system of claim 5, wherein: the white eliminating unit comprises a combustion chamber (410) and a mixing chamber (420), and the tail gas of the submerged arc furnace is combusted in the combustion chamber (410) to generate high-temperature flue gas and then enters the mixing chamber (420) to be mixed with water quenching flue gas.
9. The water quenching flue gas treatment system of claim 5, wherein: the spraying device also comprises a water supplementing unit (600), wherein the water supplementing unit (600) inputs liquid serving as circulating liquid or part of circulating liquid into the circulating spraying unit.
10. The water quenching flue gas treatment method is characterized by comprising the following steps: the method comprises the step of adopting the water quenching flue gas treatment system as claimed in any one of claims 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069351.3A CN111151086A (en) | 2020-01-21 | 2020-01-21 | Three-phase separation device for water quenching product and water quenching flue gas treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069351.3A CN111151086A (en) | 2020-01-21 | 2020-01-21 | Three-phase separation device for water quenching product and water quenching flue gas treatment system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370915A (en) * | 2020-10-29 | 2021-02-19 | 宣威市泓澔经贸有限公司 | Smoke purification system and method after water quenching treatment of zinc smelting waste residues |
| CN115031245A (en) * | 2022-01-07 | 2022-09-09 | 昆明理工大学 | Method for eliminating white color by heating water quenching flue gas of yellow phosphorus furnace slag by purified yellow phosphorus tail gas |
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Cited By (2)
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| CN112370915A (en) * | 2020-10-29 | 2021-02-19 | 宣威市泓澔经贸有限公司 | Smoke purification system and method after water quenching treatment of zinc smelting waste residues |
| CN115031245A (en) * | 2022-01-07 | 2022-09-09 | 昆明理工大学 | Method for eliminating white color by heating water quenching flue gas of yellow phosphorus furnace slag by purified yellow phosphorus tail gas |
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